CN205764278U - A kind of internal tapping die - Google Patents

Abstract

The utility model discloses an in-mold tapping mold, comprising an upper mold, a lower mold and a feeding mechanism arranged at the feeding end of the lower mold, wherein a punching mechanism, a tapping mechanism, a first trimming mechanism, a second trimming mechanism, a shaping mechanism and a cutting mechanism are sequentially arranged on the upper and lower molds according to the processing procedures; the beneficial effects of the utility model are as follows: by arranging the punching mechanism and the tapping mechanism before the continuous processing procedures in the mold, punching and tapping are performed before the raw materials are stamped, thereby improving the tapping yield and reducing the rework phenomenon; the height adjustment of the clamping space is realized by adjusting the distance of the limiting bottom plate through the fixed distance bolts, and the parallelism of the clamping space needs to be guaranteed to be within 0.01mm, so as to improve the tapping accuracy and increase the compatibility of the mold with the raw materials.

Description

A kind of internal tapping die

technical field

The utility model relates to the technical field of stamping dies, in particular to an inner tapping die.

Background technique

Stamping die is a commonly used process equipment for metal or non-metal processing into parts or semi-finished products. Stamping is to use the mold installed on the press to apply pressure to the material to cause separation or plastic deformation to obtain the required parts. A pressure processing method.

Currently, in industrial applications, metal parts, especially stamped parts, need to be tapped due to assembly requirements. In the prior art, the method of stamping and forming is usually used first, and then the upper and lower dies are punched, and then the tapping holes are tapped. However, the above-mentioned processing methods have certain limitations. For example, the threaded holes cannot be formed in the mold at one time during processing, and two-step processes of punching and tapping are required: that is, the drawing part of the tapping hole is first completed in the mold, and then tapped. The secondary processing of the tooth machine is for tapping. And because tapping can produce a large amount of metal shavings, these metal shavings are attached to the equipment and are difficult to clean up, thus affecting the service life of the processing equipment. Secondary positioning is required for punching and tapping of stamping parts, which not only reduces the processing accuracy of stamping parts, but also increases the processing steps of stamping parts, and punching and tapping of stamping parts after stamping are easy to appear The phenomenon of missed tapping increases the difficulty of detection.

In the published specification CN201520023100 of the Chinese patent application, secondary positioning is required for punching and then tapping processing of stamping parts. A tapping machine is provided inside the mold so that punching and tapping can be performed after the mold is stamped and formed, thereby Improve work efficiency. However, punching and tapping are performed after the die is stamped and formed. Once there are stamped parts that have not been successfully tapped, it is difficult to detect them from numerous stamped parts. To sum up, how to ensure the accuracy of tapping during tapping and prevent missed tapping, and to ensure the number of finished products of stamping parts tapping, is an urgent problem to be solved by those skilled in the art.

Contents of the invention

The utility model provides an internal tapping die, which has the function of reducing the phenomenon of missed tapping after processing and reducing the rate of rework.

The technical scheme that the utility model adopts is:

The upper mold is provided with an upper mold base, an upper backing plate, an upper splint, a stop plate, and a stripper plate from top to bottom, and the lower mold is provided with a lower supporting plate, a lower mold base, a lower backing plate, and a lower formwork from bottom to top. , The upper and lower dies are sequentially provided with a punching mechanism, a tapping mechanism, a first trimming mechanism, a second trimming mechanism, a shaping mechanism, and a cutting mechanism according to the processing procedures.

As a preferred solution, the punching mechanism includes a punching device arranged on the lower end surface of the upper clamping plate to pass through the stripper plate, and a punching slot arranged on the lower mold to match the punching device.

As a preferred solution, the tapping mechanism includes a tapping machine arranged on the lower end surface of the upper die base and a tapping fixture fixed by a distance bolt corresponding to the lower die and the tapping machine; the tapping machine includes a drive box and a The tapping tap connected with the box; the tapping fixture includes a fixed base and a limit base plate, the limit base plate crosses the fix base and is connected with the fix base through distance bolts, a groove is opened in the fix base, and the groove and the limit base plate The upper surface forms a clamping space, and the height adjustment of the clamping space can be realized by adjusting the distance of the limit base plate through the distance bolt; the upper surface of the fixing seat is provided with a positioning hole matched with the tapping tap, and the positioning hole communicates with the groove.

As a preferred solution, the first edge trimming mechanism includes a first edge trimming device disposed on the lower end surface of the stripper plate and a trimming groove provided on the lower mold to match the first edge trimming device.

As a preferred solution, the second trimming mechanism includes a second trimming device arranged on the lower end surface of the stripper plate and a trimming groove provided on the lower mold to match the second trimming device.

As a preferred solution, the shaping mechanism includes a shaping device arranged on the lower end surface of the stripper plate and a shaping groove matched with the shaping device arranged on the lower mold.

As a preferred solution, the cutting mechanism includes a cutting device arranged at the lower right end of the stripper plate and a cutting slot provided on the lower mold to match the cutting device.

As a preferred solution, the tapping tap is set as a spiral fluted tap, and the parallelism of the clamping space must be kept within 0.01 mm.

As a preferred solution, the feeding mechanism is a stepping device.

The beneficial effects of the utility model are:

First, by setting punching mechanism and tapping mechanism before the continuous processing process in the mold, punching and tapping are carried out before the raw material is stamped, so as to improve the tapping yield and reduce rework;

Second, the height adjustment of the clamping space is realized by adjusting the distance of the limit base plate through the fixed distance bolts. The parallelism of the clamping space must be within 0.01mm to improve the tapping precision and increase the compatibility of the mold with the raw materials.

Description of drawings

Fig. 1 is a side view of the mold structure of the utility model;

Fig. 2 is a top view of the mold structure of the present utility model;

Fig. 3 is a schematic diagram of the processing flow of the present utility model;

Fig. 4 is a partial side view of part A of the utility model.

Among the figure: upper mold 1, upper mold base 11, upper backing plate 12, upper clamping plate 13, stop plate 14, upper stripping plate 15, lower mold 2, lower supporting plate 21, lower mold base 22, lower backing plate 23, Lower template 24, feeding mechanism 3, punching mechanism 41, punching device 411, punching groove 412, tapping mechanism 42, tapping machine 421, tapping fixture 422, fixing seat 423, limit base plate 424, distance bolt 425, driving box 426, tapping tap 427, first trimming mechanism 43, first trimming device 431, second trimming mechanism 44, second trimming device 441, shaping mechanism 45, shaping device 451, cutting mechanism 46. A cutting device 461 and a clamping space 428.

detailed description

The technical scheme of the present utility model is described below in conjunction with accompanying drawing and embodiment.

Referring to Figure 1, Figure 2, Figure 3 and Figure 4:

A tapping die in a mold, comprising an upper die 1, a lower die 2 and a feeding mechanism 3 arranged at the feed end of the lower die 2, the upper die 1 is sequentially provided with an upper die base 11, an upper backing plate 12, and an upper clamping plate from top to bottom 13. Stop plate 14, stripping plate 15, lower mold 2 is provided with lower supporting plate 21, lower mold base 22, lower backing plate 23, lower template 24 in sequence from bottom to top, upper and lower molds are sequentially provided with Punching mechanism 41, tapping mechanism 42, first trimming mechanism 43, second trimming mechanism 44, shaping mechanism 45, cutting mechanism 46.

The punching mechanism 41 includes a punching device 411 arranged on the lower surface of the upper clamping plate 13 and penetrating the stripper plate 15 , and a punching groove 412 provided on the lower die 2 matching the punching device 411 .

Tapping mechanism 42 comprises the tapping machine 421 that is arranged on the lower end surface of patrix 11 and is arranged on lower mold 2 and the tapping fixture 422 that is fixed by spacer bolt 425 corresponding to tapping machine 421; Tapping machine 421 includes driving The box 426 and the tapping tap 427 connected with the drive box 426; the tapping fixture 422 includes a fixed base 423 and a limit base plate 424, and the limit base plate 424 crosses the fixed base 423 and is connected with the fixed base 423 by distance bolts 425 , there is a groove in the fixed seat 423, the groove and the upper surface of the limit base plate 424 form a clamping space 428, and the height adjustment of the clamp space 428 can be realized by adjusting the distance of the limit base plate 424 through the distance bolt 425; The upper surface of 424 is provided with a positioning hole matched with the tapping tap 427, and the positioning hole communicates with the groove.

In order to improve the yield rate of tapping and reduce the phenomenon of rework, a punching mechanism 41 and a tapping mechanism 42 are provided before the mold processing process to perform punching and tapping processes before stamping workpieces to ensure that each stamping part after tapping All have been tapped.

In order to increase the compatibility of the mold to the thickness of the material, the distance bolt 425 of the fixed seat 423 can be rotated, and the rise or fall of the fixed seat 423 can be adjusted by rotating the distance bolt 425 clockwise or counterclockwise, thereby adjusting the clip The height of the holding space 428 is suitable for materials of different thicknesses.

The first trimming mechanism 43 includes a first trimming device 431 arranged on the lower surface of the stripper plate 15 and a trimming groove provided on the lower die 2 matching the first trimming device 431 .

The second trimming mechanism 44 includes a second trimming device 441 arranged on the front end of the lower end surface of the stripper plate 15 and a trimming groove matched with the second trimming device 441 arranged on the lower mold 2 .

The shaping mechanism 45 includes a shaping device 451 arranged on the lower end surface of the stripper plate 15 and a shaping groove matched with the shaping device 451 arranged on the lower mold 2 .

The cutting mechanism 46 includes a cutting device 461 arranged at the lower right end of the stripper plate 15 and a cutting groove provided on the lower die 2 matching the cutting device 461 .

In order to improve the tapping precision, the parallelism of the clamping space 428 needs to be guaranteed within 0.01 mm to limit the translation of the strip in the clamping space 428 to ensure the machining accuracy during tapping.

In order to ensure the processing speed and centering accuracy of tapping, the tapping tap 427 is a spiral flute tap, which has fast processing speed, high precision, good chip removal and good centering.

In order to ensure the processing accuracy of the process, the feeding mechanism 3 is a stepping device, and the stepping feeding is used to ensure the accuracy of the translation position during each stamping.

The process that the utility model carries out processing is:

Place the raw material on the feeding mechanism 3, and the feeding mechanism 3 moves the strip material to the processing place of the mechanism in a step-by-step manner. In the same step, every time a processing process is completed, the upper mold 1 moves upward, and the feeding mechanism 3 pushes the strip material Move to the right step by step to the next mechanism processing place, and carry out the next processing process.

After the punching process is completed, the punching mechanism 41 starts, the upper die 1 is punched down and the lower die 2 is clamped, the punching device 411 presses down on the strip material, and the strip material is deformed to form a tapping hole, and the punching device 411 will The punched material is pressed into the punching groove 412 to complete a machining process.

After the internal tapping process is completed, the tapping mechanism 42 starts, and the strip passes through the upper surface of the limit base plate 424 in the tapping fixture 422 to form a clamping space 428. The upper die 1 is punched down and the lower die 2 is clamped. The drive box 426 drives the tapping tap 427 to rotate, and the tapping tap 427 presses down the strip through the positioning hole on the upper end surface of the tapping fixture 422, so that the tapping hole of the strip is tapped in the clamping space 428 to produce threads.

After the first stamping and trimming of the strip is completed, the first trimming processing mechanism 43 starts, the upper die 1 is punched down and the lower die 2 is molded, and the first trimming device 431 presses down on the strip, so that the strip is cut Cutting in the side groove to complete the transformation.

After the second stamping and trimming of the strip is completed, the second trimming mechanism 44 starts, the upper die 1 punches down and the lower die 2 is molded, the second trimming device 441 presses down on the strip, and the strip has been cut Cooperate with the cutting edge, so that the strip is cut in the edge trimming groove, and the second edge trimming is performed to complete the strip forming.

After finishing the shaping of the surface, the shaping mechanism 45 starts, the upper mold 1 is punched down and the lower mold 2 is closed, and the shaping device 451 presses down on the strip, so that the strip is flattened in the shaping groove, and the surface flatness is consistent.

After cutting and feeding, the cutting mechanism 46 starts, the upper mold 1 is punched down and the lower mold 2 is clamped, and the cutting device 461 presses down on the strip, so that the strip is cut in the cutting groove, and the cut strip passes through The feeding mechanism 3 sends out the mould.

The above embodiments only show and describe the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model.

Claims (9)

1. a tapping die in a mould, comprising a patrix (1), a counterdie (2) and a feeding mechanism (3) arranged at the feed end of the mould, and the patrix (1) is successively provided with an upper die (1) from top to bottom Die base (11), upper backing plate (12), upper clamping plate (13), stop plate (14), stripping plate (15), described lower mold (2) is provided with lower pallet ( 21), the lower mold base (22), the lower backing plate (23), and the lower template (24), which are characterized in that: the upper and lower molds are sequentially provided with a punching mechanism (41) and a tapping mechanism (42) according to the processing procedures , the first trimming mechanism (43), the second trimming mechanism (44), the shaping mechanism (45), the cutting mechanism (46). 2. A tapping die in a mold according to claim 1, characterized in that: the punching mechanism (41) includes a punching hole arranged on the lower end surface of the upper clamping plate (13) and penetrating through the stripping plate (15) device (411) and a punching groove (412) that is arranged on the lower die (2) and matches the punching device (411). 3. A kind of in-mold tapping die according to claim 1, characterized in that: said tapping mechanism (42) comprises a tapping machine (421) and a set The tapping fixture (422) that is fixed by spacer bolt (425) correspondingly with tapping machine (421) at lower mold (2); Described tapping machine (421) comprises driving box (426) and with driving box ( 426) connected tapping taps (427); the tapping fixture (422) includes a fixed base (423) and a limit base plate (424), and the limit base plate (424) passes through the fix base (423) The distance bolts (425) are connected with the fixed seat (423), and a groove is provided in the fixed seat (423), and a clamping space (428) is formed between the groove and the upper surface of the limiting base plate (424). The height adjustment of the clamping space (428) can be realized by adjusting the distance of the limit base plate (424) through the distance bolt (425); The positioning hole communicates with the groove. 4. A tapping die in a mold according to claim 1, characterized in that: the first trimming mechanism (43) includes a first trimming device (431) arranged on the lower end surface of the stripper plate (15) ) and a trimming groove that matches the first trimming device (431) that is arranged on the lower die (2). 5. A tapping die in a mold according to claim 1, characterized in that: the second edge trimming mechanism (44) comprises a second edge trimming device (441) arranged on the lower end surface of the stripper plate (15) ) and the trimming groove that is arranged on the lower die (2) and matches the second trimming device (441). 6. A kind of internal tapping die according to claim 1, characterized in that: the shaping mechanism (45) includes a shaping device (451) arranged on the lower end surface of the stripper plate (15) and a shaping device (451) arranged on the lower die ( 2) a shaping groove matched with the shaping device (451). 7. A kind of in-mold tapping die according to claim 1, characterized in that: the cutting mechanism (46) includes a cutting device (461) arranged at the lower right end of the stripper plate (15) and a set A cutting groove matched with the cutting device (461) of the lower mold (2). 8. A tapping die in a mold according to claim 3, characterized in that: the tapping tap (426) is set as a spiral groove tap; the parallelism of the clamping space (428) must be guaranteed to be 0.01 within mm. 9. An in-mold tapping die according to claim 1, characterized in that: the feeding mechanism (3) is a stepping device.